Ah ha! In algebra, a letter stands for an unknown value! Some of the most common letters used in algebra are: x, y, n, and p. Some might say 'n' is an uNknown number! haha
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ANSWER: "n" is a pronumeral which stands for an unknown number. Pronumerals are used in algebra.
An unknown or variable (n) multiplied by 10
The numbers are 12, 14 and 16. Let the numbers by n - 2, n and n + 2, then (n - 2) + n + (n + 2) = 3n = 42 : n = 14 so n - 2 = 12 and n + 2 = 16.
In America it is math, in most European countries it is maths
Yes, math is called maths in Welsh.